Thin film transistor array panel, liquid crystal display, and method to repair the same

ABSTRACT

A method of repairing a short of a pixel electrode and a storage electrode including irradiating laser to separate a portion shorted to the pixel electrode among the storage electrode to be disconnected, in which the storage electrode includes a first portion overlapping a data line between two adjacent gate lines and a second portion connected to the first portion and enclosing an edge of a pixel area except for a region where the first portion is formed, the pixel area is defined by the data line and a gate line, a thin film transistor is coupled to the data line, the gate line, and the pixel electrode, and two adjacent pixel areas are defined by the two adjacent gate lines and two adjacent data lines, and the storage electrode is branched between pixel electrodes respectively formed in the two adjacent pixel areas.

CROSS REFERENCE TO RELATED APPLICATION

This application is a divisional of U.S. patent application Ser. No.15/004,305, filed on Jan. 22, 2016, which is a divisional application ofU.S. patent application Ser. No. 13/968,978, filed on Aug. 16, 2013, nowissued as U.S. Pat. No. 9,274,393, which is a continuation of U.S.patent application Ser. No. 13/016,438, filed on Jan. 28, 2011, nowissued as U.S. Pat. No. 8,514,338, and claims priority from and thebenefit of Korean Patent Application No. 10-2010-0095177, filed on Sep.30, 2010, all of which are hereby incorporated by reference for allpurposes as if fully set forth herein.

BACKGROUND OF THE INVENTION Field of the Invention

Exemplary embodiments of the present invention relate to a thin filmtransistor array panel, a liquid crystal display, and a repairing methodcapable of reducing an influence generated between adjacent pixels in aprocess of repairing deteriorations.

Discussion of the Background

A liquid crystal display (LCD) is a widely-used flat panel display thatincludes two electrode-containing substrates and a liquid crystal layerinterposed therebetween. By applying a signal to the electrodes, theamount of light transmitted by rearranging liquid crystal molecules ofthe liquid crystal layer can be controlled.

At least one of the substrates may include a thin film transistor (TFT)array panel used as a circuit board to independently drive each pixel inthe liquid crystal display or an organic light emitting device.

The TFT array panel may include a gate line transmitting a gate signal;a data line transmitting a data signal and intersecting the gate line; athin film transistor connected to the gate line and the data line; and apixel electrode connected to the thin film transistor.

When signal lines of the liquid crystal display are disconnected orshorted, a corresponding pixel may need to be repaired. After beingrepaired, however, the repaired pixel and a pixel neighboring therepaired pixel may have a higher or lower luminance than that of anormal pixel.

The above information disclosed in this Background section is only forenhancement of understanding of the background of the invention andtherefore it may contain information that does not form the prior artthat is already known in this country to a person of ordinary skill inthe art.

SUMMARY OF THE INVENTION

Exemplary embodiments of the present invention provide a liquid crystaldisplay, a thin film transistor array panel capable of reducingdistortion of a potential charged to an adjacent pixel electrode by adata signal input to a storage electrode used for repairing when pixeldeterioration due to a disconnection of a data line is generated, and arepairing method thereof.

Exemplary embodiments of the present invention also provide a liquidcrystal display, a thin film transistor array panel capable of reducingthe effect on the adjacent pixel electrode by the storage electrode usedfor repairing when a pixel deterioration due to a short of a pixelelectrode and a storage electrode is generated, and a repairing methodthereof are provided.

Exemplary embodiments of the present invention also provide a liquidcrystal display, a thin film transistor array panel capable of stablyexecuting a repairing process, and a repairing method thereof areprovided.

Additional features of the invention will be set forth in thedescription which follows, and in part will be apparent from thedescription, or may be learned by practice of the invention.

Exemplary embodiments of the present invention disclose a thin filmtransistor array panel including a substrate, a gate line, a data line,a thin film transistor, a pixel electrode, and a storage electrode. Thedata line intersects the gate line. The gate line and the data line areformed on the substrate and define a pixel area. The thin filmtransistor is connected to the gate line and the data line. The pixelelectrode is formed in the pixel area and connected to the thin filmtransistor. The storage electrode includes a first portion overlappingthe data line between two adjacent gate lines, and a second portionconnected to the first portion and enclosing an edge of the pixel areaexcept for a region where the first portion is formed. The storageelectrode is branched between the pixel electrodes respectively formedin two adjacent pixel areas.

Exemplary embodiments of the present invention disclose a liquid crystaldisplay includes a first substrate, a second substrate facing the firstsubstrate, a gate line and a data line intersecting the gate line, athin film transistor, a pixel electrode, and a storage electrode. Thegate line and the data line define a pixel area on the first substrate.The thin film transistor is connected to the gate line and the dataline. The pixel electrode is connected to the thin film transistor inthe pixel area. The storage electrode includes a first portionoverlapping the data line between two adjacent gate lines, and a secondportion connected to the first portion and enclosing an edge of thepixel area except for a region where the first portion is formed. Thestorage electrode is branched between the pixel electrodes respectivelyformed in two adjacent pixel areas.

Exemplary embodiments of the present invention disclose a method torepair a data line in a thin film transistor array panel, the methodincludes if the data line is disconnected at a disconnection portion,irradiating a laser on at least one side of the disconnected portion ofthe data line to short the data line and a storage electrode; andirradiating the laser to separate a portion shorted to the data lineamong the storage electrode to be disconnected. The storage electrodeincludes a first portion overlapping the data line between two adjacentgate lines and a second portion connected to the first portion andenclosing an edge of a pixel area except for a region where the firstportion is formed. The pixel area is defined by the data line and a gateline. A thin film transistor is coupled to the data line, the gate line,and at least one of the pixel electrodes. The two adjacent pixel areasare defined by the two adjacent gate lines and two adjacent data lines,and the storage electrode is branched between pixel electrodesrespectively formed in the two adjacent pixel areas.

Exemplary embodiments of the present invention disclose a method ofrepairing a short of a pixel electrode and a storage electrode. Themethod includes irradiating laser to separate a portion shorted to thepixel electrode among the storage electrode to be disconnected. Thestorage electrode includes a first portion overlapping the data linebetween two adjacent gate lines and a second portion connected to thefirst portion and enclosing an edge of a pixel area except for a regionwhere the first portion is formed. The pixel area is defined by the dataline and a gate line. A thin film transistor is coupled to the dataline, the gate line, and the pixel electrode. The two adjacent pixelareas are defined by the two adjacent gate lines and two adjacent datalines, and the storage electrode is branched between pixel electrodesrespectively formed in the two adjacent pixel areas

Exemplary embodiments of the present invention disclose a method ofrepairing a disconnection of a data line. The method includesirradiating a laser on at least one side of a disconnected portion ofthe data line to short the data line and a storage electrode, andirradiating the laser to separate a portion shorted to the data lineamong the storage electrode to be disconnected. The storage electrodeincludes a first portion overlapping the data line between two adjacentgate lines and a second portion connected to the first portion andenclosing an edge of a pixel area except for a region where the firstportion is formed. The pixel area is defined by the data line and a gateline. A thin film transistor is coupled to the data line, the gate line,and a pixel electrode. The two adjacent pixel areas are defined by thetwo adjacent gate lines and two adjacent data lines, and the storageelectrode is branched between pixel electrodes respectively formed inthe two adjacent pixel areas.

Exemplary embodiments of the present invention disclose a method ofrepairing a short of a pixel electrode and a storage electrode. Themethod includes irradiating a laser to separate a portion shorted to thepixel electrode among the storage electrode to be disconnected. Thestorage electrode includes a first portion overlapping a data linebetween two adjacent gate lines and a second portion connected to thefirst portion and enclosing an edge of a pixel area except for a regionwhere the first portion is formed. The pixel area is defined by the dataline and a gate line. A thin film transistor is coupled to the dataline, the gate line, and the pixel electrode. The two adjacent pixelareas are defined by the two adjacent gate lines and two adjacent datalines, and the storage electrode is branched between pixel electrodesrespectively formed in the two adjacent pixel areas.

It is to be understood that both the foregoing general description andthe following detailed description are exemplary and explanatory and areintended to provide further explanation of the invention as claimed.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which are included to provide a furtherunderstanding of the invention and are incorporated in and constitute apart of this specification, illustrate exemplary embodiments of theinvention, and together with the description serve to explain theprinciples of the invention.

FIG. 1 is a top plan view of a thin film transistor array panelaccording to exemplary embodiments of the present invention.

FIG. 2 is a top plan view of a color filter panel according to exemplaryembodiments of the present invention.

FIG. 3 is a top plan view of a liquid crystal display according toexemplary embodiments of the present invention.

FIG. 4 is a cross-sectional view taken along the line IV-IV′ of FIG. 3according to exemplary embodiments of the present invention.

FIG. 5 is a top plan view of a thin film transistor array panelaccording to exemplary embodiments of the present invention.

FIG. 6 is a top plan view of a color filter panel according to exemplaryembodiments of the present invention.

FIG. 7 is a top plan view of a liquid crystal display according toexemplary embodiments of the present invention.

FIG. 8 is a cross-sectional view taken along line VIII-VIII′ of FIG. 7according to exemplary embodiments of the present invention.

FIG. 9 is a top plan view of a liquid crystal display according toexemplary embodiments of the present invention.

FIG. 10 is a top plan view showing a method of repairing a disconnectionof a data line of a liquid crystal display according to exemplaryembodiments of the present invention.

FIG. 11 is a top plan view showing a method of repairing a disconnectionof a data line of a liquid crystal display according to exemplaryembodiments of the present invention.

FIG. 12 is a top plan view showing a method of repairing a disconnectionof a data line of a liquid crystal display according to exemplaryembodiments of the present invention.

FIG. 13 is a top plan view showing a method of repairing a short of apixel electrode and a storage electrode of a liquid crystal displayaccording to exemplary embodiments of the present invention.

FIG. 14 is a top plan view showing a method of repairing a short of apixel electrode and a storage electrode of a liquid crystal displayaccording to exemplary embodiments of the present invention.

FIG. 15 is a top plan view showing a method of repairing a short of afirst portion of a pixel electrode and a storage electrode of a liquidcrystal display according to exemplary embodiments of the presentinvention.

FIG. 16 is a top plan view showing a method of repairing a short of asecond portion of a pixel electrode and a storage electrode of a liquidcrystal display according to exemplary embodiments of the presentinvention.

DETAILED DESCRIPTION OF THE ILLUSTRATED EMBODIMENTS

Exemplary embodiments of the present invention are described hereinafterwith reference to the accompanying drawings. As those skilled in the artwould realize, the exemplary embodiments may be modified in variousways, without departing from the spirit or scope of the presentinvention.

In the drawings, the sizes and relative sizes of layers, films, panels,and regions may be exaggerated for clarity. Like reference numeralsdesignate like elements throughout the specification. It will beunderstood that when an element such as a layer, film, region, orsubstrate is referred to as being “on”, “connected to”, or “coupled to”another element or layer, it can be directly on, connected or coupled tothe other element or layer or intervening elements or layers may bepresent. In contrast, when an element is referred to as being “directlyon,” “directly connected to” or “directly coupled to” another element orlayer, there may be no intervening elements or layers present.

It should be understood that, although the terms first, second, thirdetc. may be used herein to describe various elements, components,regions, layers and/or sections, these elements, components, regions,layers and/or sections should not be limited by these terms. These termsare only used to distinguish one element, component, region, layer orsection from another region, layer or section. Thus, a first element,component, region, layer or section discussed below could be termed asecond element, component, region, layer or section without departingfrom the teachings of the exemplary embodiments of the invention. Asused herein, the term “and/or” includes any and all combinations of oneor more of the associated listed items.

Spatially relative terms, such as “beneath”, “below”, “lower”, “above”,“upper” and the like, may be used herein for ease of description todescribe one element or feature's relationship to another element(s) orfeature(s) as illustrated in the figures. It will be understood that thespatially relative terms are intended to encompass differentorientations of the device in use or operation in addition to theorientation depicted in the figures. For example, if the device in thefigures is turned over, elements described as “below” or “beneath” otherelements or features would then be oriented “above” the other elementsor features. Thus, the exemplary term “below” can encompass both anorientation of above and below. The device may be otherwise oriented(rotated 90 degrees or at other orientations) and the spatially relativedescriptors used herein interpreted accordingly.

The terminology used herein is for the purpose of describing exemplaryembodiments only and is not intended to be limiting of the invention. Asused herein, the singular forms “a”, “an” and “the” are intended toinclude the plural forms as well, unless the context clearly indicatesotherwise. It will be further understood that the terms “comprises”and/or “comprising,” when used in this specification, specify thepresence of stated features, integers, steps, operations, elements,and/or components, but do not preclude the presence or addition of oneor more other features, integers, steps, operations, elements,components, and/or groups thereof.

Exemplary embodiments of the invention are described herein withreference to cross-section illustrations that are schematicillustrations of idealized embodiments (and intermediate structures) ofthe invention. As such, variations from the shapes of the illustrationsas a result, for example, of manufacturing techniques and/or tolerances,are to be expected. Thus, exemplary embodiments of the invention shouldnot be construed as limited to the particular shapes of regionsillustrated herein but are to include deviations in shapes that result,for example, from manufacturing. For example, an implanted regionillustrated as a rectangle will, typically, have rounded or curvedfeatures and/or a gradient of implant concentration at its edges ratherthan a binary change from implanted to non-implanted region. Likewise, aburied region formed by implantation may result in some implantation inthe region between the buried region and the surface through which theimplantation takes place. Thus, the regions illustrated in the figuresare schematic in nature and their shapes are not intended to illustratethe actual shape of a region of a device and are not intended to limitthe scope of the invention.

Unless otherwise defined, all terms (including technical and scientificterms) used herein have the same meaning as commonly understood by oneof ordinary skill in the art to which this invention belongs. It will befurther understood that terms, such as those defined in commonly useddictionaries, should be interpreted as having a meaning that isconsistent with their meaning in the context of the relevant art andwill not be interpreted in an idealized or overly formal sense unlessexpressly so defined herein.

Hereinafter, a liquid crystal display according to exemplary embodimentsof the present invention will be described with reference to theaccompanying drawings.

Referring to FIG. 1, FIG. 2, FIG. 3, and FIG. 4, a liquid crystaldisplay (LCD) may include a thin film transistor array panel 100, acommon electrode panel 200, and liquid crystal layer (not shown)interposed between the thin film transistor array panel 100 and thecommon electrode panel 200.

The thin film transistor array panel 100 may include a first substrate110, gate lines 121 and data lines 171 intersecting each other on thefirst substrate 110 to define pixel areas, a thin film transistor (TFT)connected to the gate line 121 and the data line 171, a pixel electrode191 connected to the thin film transistor (TFT) of the pixel area, and astorage electrode 131 formed at the lower portion of the data line 171and the edge of the pixel area.

The gate line 121 may be formed in one direction on the first substrate110, and may include a gate electrode 124 protruded from the gate line121.

The data line 171 may be formed in the direction intersecting the gateline 121, and may include a source electrode 173 and a drain electrode175. The source electrode 173 may protrude from the data line 171towards the gate electrode 124, and the drain electrode 175 may beformed, at least in part, on the gate electrode 124 and separated fromthe source electrode 173 by a predetermined interval.

A gate insulating layer 140 may be formed between the gate line 121 andthe data line 171, and although not shown, a semiconductor layer may beformed on the gate insulating layer 140 on the gate electrode 124. Thegate electrode 124, the semiconductor layer, the source electrode 173,and the drain electrode 175 can form the thin film transistor (TFT).

A passivation layer 180 may be formed between the data line 171 and thepixel electrode 191. The pixel electrode 191 may be connected to thedrain electrode 175 of the thin film transistor (TFT) through a contacthole 181 of the passivation layer 180. The data lines 171, gate lines121, semiconductor layer, pixel electrode 191, contact hole 181,passivation layer 180 are known elements in the art, and therefore adetailed description thereof is not provided herein.

The storage electrode 131 may include a first portion 131 a and a secondportion 131 b. The first portion 131 a may overlap the data line 171between two gate lines 121. The second portion 131 b may enclose theedge of the pixel area and may be connected to the first portion 131 a.In some cases, the first portion 131 a may be disconnected at adisconnection portion 134 thereby dividing the first portion 131 a intotwo portions. The disconnection portion 134 may be positioned at thecenter between two adjacent gate lines 121. In general, thedisconnection portion 134 may be located at any location between twoadjacent gate lines 121. In some cases, the first portion 131 a may bedivided into more than two portions. In general, the first portion 131 amay be divided into any suitable number of portions. In some cases, thefirst portion 131 a may not be divided.

In some cases, the data line 171 overlapping the disconnection portion134 may have a wider width than a width of the data line 171 that doesnot overlap the first portion 131 a of the storage electrode 131. Thestorage electrode 131 may be made of any suitable material including,for example, an opaque metal to prevent light leakage. Light leakage mayoccur in or around the disconnection portion 134. In some cases, thedata line 171 overlapping the disconnection portion 134 may initially beformed with the same width of the first portion 131 a of the storageelectrode 131. The width of the data line 171 on the disconnectionportion 134 may then be widened thereby preventing light leakage.

In general, the liquid crystal display may have any suitable apertureratio. In some cases, the aperture ratio of the liquid crystal displaymay be about 54.7% with the expansion of the width of the data line 171.The aperture ratio of the liquid crystal display without thedisconnection portion 134 and the expansion of the width of the dataline 171 may also be about 54.7%. Accordingly, the aperture ratio is notreduced due to the expansion of the width of the data line 171.

When repairing a data line 171 to repair a disconnection caused byirradiation of a laser, the width of a repairing portion 171 a may beexpanded. That is, the width of the repairing portion 171 a may be widerthan the width of the data line 171 overlapping the first portion 131 aof the storage electrode 131. In some cases, the width of the repairingportion 171 a may be narrower than the width of the data line 171overlapping the disconnection portion 134. The repairing portion 171 amay be the upper and lower portions of the data line 171 adjacent to thedisconnection portion 134 and the portion of the data line 171overlapping the portion connected to the first portion 131 a and thesecond portion 131 b.

The storage electrodes 131 of each pixel area may be connected to eachother. The second portions 131 b of the storage electrodes 131positioned at two adjacent pixel areas via the gate line 121 may beconnected by a bridge 135. The storage electrode 131 may be made in thesame layer as at least one of the gate line 121, the gate electrode 124,and the gate insulating layer 140. The passivation layer 180 may have acontact hole 182 where the second portion 131 b of the storage electrode131 and the bridge 135 connect.

The common electrode panel 200 may include a second substrate 210, alight blocking member 220 formed on the second substrate 210 andcorresponding to the edge of the pixel area of the first substrate 110,a color filter 230 formed on the second substrate 210 and correspondingto the pixel area of the first substrate 110, and a common electrode 270formed on the second substrate 210. In some cases, the common electrode270 may be formed on the entire second substrate 210.

The light blocking member 220 may be formed corresponding to the gateline 121, the data line 171, the thin film transistor (TFT), and thestorage electrode 131 to prevent light leakage.

The color filter 230 may be used to realize color of the liquid crystaldisplay. For example, red, blue, and/or green color filters 230 may bedisposed in any suitable manner, including for example, repeatedlydisposing the red, blue, and green color filters 230 on the secondsubstrate 210.

The common electrode 270 may be oriented to face the pixel electrode 191formed on the first substrate 110 to generate an electric field in theliquid crystal layer interposed between the TFT array panel 100 and thecommon electrode panel 200. The electric field may be generatedaccording to voltages applied to the pixel electrode 191 and the commonelectrode 270 such that the arrangement of the liquid crystal moleculesis determined and the polarization of incident light is controlled todisplay an image.

Hereinafter, a liquid crystal display according to the exemplaryembodiments of the present invention will be described with reference toFIG. 5, FIG. 6, FIG. 7, and FIG. 8.

Referring to FIG. 5, FIG. 6, FIG. 7, and FIG. 8, a liquid crystaldisplay may include a thin film transistor array panel 100 and a commonelectrode panel 200 facing the thin film transistor array panel 100. Aliquid crystal layer (not shown) may be interposed between the thin filmtransistor array panel 100 and the common electrode panel 200.

The thin film transistor array panel 100 may include the first substrate110, the gate line 121, the data line 171, the thin film transistor(TFT), the pixel electrode 191, and the storage electrode 131 asdescribed above. The storage electrode 131 may include the first portion131 a and the second portion 131 b. The first portion 131 a may includethe disconnection portion 134.

However, contrary to the exemplary embodiments illustrated in FIG. 1,FIG. 2, FIG. 3, and FIG. 4, the data line 171 overlapping thedisconnection portion 134 in FIG. 5, FIG. 6, FIG. 7, and FIG. 8 may beformed to have the same width as the width of the repairing portion 171a. Also, the data line 171 overlapping the disconnection portion 134 maybe formed to have the same width as the width of the data line 171overlapping the first portion of the storage electrode 131. For example,in FIG. 1, FIG. 2, FIG. 3, and FIG. 4, the width of the data line 171 isexpanded to prevent the light leakage on the disconnection portion 134;however, in FIG. 5, FIG. 6, FIG. 7, and FIG. 8, the light leakage can beprevented through other means such that it is not necessary to expandthe width of the data line 171.

The common electrode panel 200 may include the second substrate 210, thelight blocking member 220, the color filter 230, and the commonelectrode 270 as described above.

However, contrary to the exemplary embodiments illustrated in FIG. 1,FIG. 2, FIG. 3, and FIG. 4, the light blocking member 220 overlappingthe disconnection portion 134 in FIG. 5, FIG. 6, FIG. 7, and FIG. 8 mayhave a wider width than the width of the light blocking member 220overlapping the first portion 131 a of the storage electrode 131. Also,the light blocking member 220 overlapping the disconnection portion 134may have a wider width than the width of the first portion 131 a of thestorage electrode 131. That is, the width of the light blocking member220 corresponding to the disconnection portion 134 may be expanded suchthat the light leakage in or around the disconnection portion 134 may beprevented.

In general, the liquid crystal display may have any suitable apertureratio. In some cases, the aperture ratio of the liquid crystal displaywith the disconnection portion 134 described with reference to FIG. 5,FIG. 6, FIG. 7, and FIG. 8 may be about 54.3%. The aperture ratio of theliquid crystal display without the disconnection portion 134 and theexpansion of the width of the data line 171 may be approximately 54.7%.Accordingly, the aperture ratio may be negligibly, but slightly changeddue to expansion of the width of the light blocking member 220.

Hereinafter, a liquid crystal display according to exemplary embodimentsof the present invention will be described with reference to FIG. 9,which is a top plan view of a thin film transistor array panel.

Referring to FIG. 9, a liquid crystal display may include a thin filmtransistor array panel 100 and a common electrode panel (not shown)facing thin film transistor array panel 100. A liquid crystal layer (notshown) may be interposed between the thin film transistor array panel100 and the common electrode panel 200.

The thin film transistor array panel 100 may include the first substrate110, the gate line 121, the data line 171, the thin film transistor(TFT), the pixel electrode 191, and the storage electrode 131 asdescribed above with reference to FIG. 1, FIG. 2, FIG. 3, and FIG. 4.

Referring to FIG. 9, two pixel areas may be defined by two adjacent gatelines 121 and two adjacent data lines 171, and the pixel electrode 191may be formed in each pixel area. The pixel electrode 191 may notoverlap the storage electrode 131 at all the vertexes of the pixel area.For example, the storage electrode 131 may be branched between the pixelelectrodes 191 of two adjacent pixel areas. When a disconnection defectof the data line 171 or a shorting defect between the pixel electrode191 and the storage electrode 131 is generated, the storage electrode131 may be disconnected by irradiating, using a laser, storage electrode131 that does not overlap the pixel electrode 191 under the repairingprocess.

The storage electrode 131 may include the first portion 131 a and thesecond portion 131 b; however, contrary to the exemplary embodimentsillustrated in FIG. 1, FIG. 2, FIG. 3, and FIG. 4, the disconnectionportion 134 may be formed on the lower end of the first portion 131 a.For example, the lower end of the first portion 131 a may not beconnected to the second portion 131 b, but the upper end of the firstportion 131 a may be connected to the second portion 131 b. Accordingly,the upper end of the first portion 131 a may be disconnected from thesecond portion 131 b through laser irradiation while the lower end ofthe first portion 131 a may already be disconnected from the secondportion 131 b under the repairing processing at the portion overlappingthe data line 171.

The repairing portion 171 a may be shorted in the data line 171 underthe repairing processing. The width of the repairing portion 171 a maybe expanded such that connection through the laser irradiation is easy.That is, the width of the repairing portion 171 a may be wider than theportion that does not overlap the first portion 131 a of the storageelectrode 131. The repairing portion 171 a may be the upper portion ofthe first portion 131 a neighboring the disconnection portion 134.

The first portion 131 a of the storage electrode 131 and the pixelelectrode 191 may overlap each other, and the overlapping width may beless than 3.5 um. In some cases, the overlapping width of the firstportion 131 a and the pixel electrode 191 may be reduced to 3.5 um from4.5 um such that the effect of the data signal flowing to the firstportion 131 a used for repairing the disconnection defect of the dataline 171 may be reduced on the pixel electrode 191. In general, theoverlapping width may be any suitable width.

Hereinafter, a method of repairing a disconnection of a data line of aliquid crystal display according to exemplary embodiments of the presentinvention will be described.

FIG. 10 is a top plan view showing a method of repairing a disconnectionof a data line of the liquid crystal display described with reference toFIG. 1, FIG. 2, FIG. 3, and FIG. 4.

Referring to FIG. 10, when a defect of the data line 171 disposed at anupper side relative to the disconnection portion 134 being disconnectedis generated, the signal transmitted through the data line 171 may notbe transmitted to the lower side of a disconnection defect portion 320.

The repairing portions 171 a disposed on the upper and/or lower sides ofthe disconnection defect portion 320 may be irradiated by a laser 340for the data line 171 and the first portion 131 a of the storageelectrode 131 to be connected such that the signal applied to the dataline 171 may be transmitted through the storage electrode 131.

Next, to electrically disconnect the second portion 131 b connected tothe first portion 131 a of the storage electrode 131 used for therepair, laser from a laser 330 may be irradiated on the second portion131 b of the storage electrode 131 that does not overlap the data line171. The laser 330 may irradiate laser on both sides of the storageelectrode 131 used for the repair and overlapping of the data line 171.

Hereinafter, a method of repairing a disconnection of a data line of aliquid crystal display according to exemplary embodiments of the presentinvention will be described.

FIG. 11 is a top plan view showing a method of repairing a disconnectionof a data line of the liquid crystal display described with reference toFIG. 5, FIG. 6, FIG. 7, and FIG. 8.

Referring to FIG. 11, a repair may be executed using the same method asdescribed with reference to in FIG. 10; however, in FIG. 11, the defectof the data line 171 may be generated on a lower side relative to thedisconnection portion 134 being disconnected.

A laser 340 may irradiate laser on the repairing portion 171 a disposedon the upper and/or lower sides of the disconnection defect portion 320to connect the data line 171 and the first portion 131 a of the storageelectrode 131. A laser 330 may irradiate laser on the second portion 131b connected to the first portion 131 a used for the repair in thestorage electrode 131 to be electrically separated for thedisconnection.

When repairing the disconnection of the data line in the liquid crystaldisplays as described with reference to FIG. 10 and FIG. 11, the effecton neighboring pixels can be described in comparison to a liquid crystaldisplay without a disconnection portion.

If a repair for a disconnection defect of a data line is executed in aliquid crystal display without a disconnection portion, an entire firstportion of the storage electrode overlapping the data line may be used.In contrast, in the liquid crystal display described with reference toFIG. 10 and FIG. 11, the first portion 131 a of the storage electrode131 may include a disconnection portion 134 such that the upper half ofthe first portion 131 a of the storage electrode 131 may be used forrepairing when the upper portion of the data line 171 with reference tothe disconnection portion 134 is disconnected. Alternatively, the lowerhalf of the first portion 131 a of the storage electrode 131 may be usedfor repairing when the lower portion of the data line 171 with referenceto the disconnection portion 134 is disconnected.

The degree of distortion of the potential charged to the pixel electrode191 may be described by a ratio of the first storage capacitance Cst1and the second storage capacitance Cst2. The first storage capacitanceCst1 may be the storage capacitance between the storage electrode 131used for the repair and the pixel electrode 919. The second storagecapacitance Cst2 may be the storage capacitance between the storageelectrode 131 that is not used for the repair and the pixel electrode191. As the first storage capacitance Cst1 increases, the second storagecapacitance Cst2 may decrease, and therefore, the potential of thecorresponding pixel may be distorted. As the ratio (Cst1/Cst2) of thefirst storage capacitance Cst1 to the second storage capacitance Cst2 isdecreased, the effect on the corresponding pixel may be minimized.

In a liquid crystal display without the disconnection portion, the firststorage capacitance Cst1 may be about 661 pF to 905 pF, and the ratio(Cst1/Cst2) of the first storage capacitance Cst1 to the second storagecapacitance Cst2 may be about 32% to 36%. In contrast, in the liquidcrystal display described with reference to FIG. 1, FIG. 2, FIG. 3, FIG.4, FIG. 5, FIG. 6, FIG. 7, FIG. 8, FIG. 10, and FIG. 11, the firststorage capacitance Cst1 may be decreased to about 270 pF, and the ratio(Cst1/Cst2) of the first storage capacitance Cst1 to the second storagecapacitance Cst2 may be decreased to 14% such that the effect on thecorresponding pixel may be decreased to about ⅓.

Hereinafter, a method of repairing a disconnection of a data line 171 ofthe liquid crystal display described with reference to FIG. 9 will bedescribed with reference to FIG. 12.

Referring to FIG. 12, a laser 340 may irradiate light on the repairingportion 171 a disposed on the upper and/or lower sides of thedisconnection defect portion 320 to connect the data line 171 and thefirst portion 131 a of the storage electrode 131. A laser 330 mayirradiate light for the second portion 131 b connected to the firstportion 131 a used for the repair in the storage electrode 131 to beseparated for the disconnection.

Hereinafter, a method of repairing a short of a pixel electrode 191 anda storage electrode 131 of the liquid crystal display described withreference to FIG. 1, FIG. 2, FIG. 3, and FIG. 4 will be described withreference to FIG. 13.

Referring to FIG. 13, when the first portion 131 a of the storageelectrode 131 that is positioned at the upper side relative to thedisconnection portion 134 and the pixel electrode 191 that is positionedat the right side of the disconnection portion 134 are shorted, thepixel electrode 191 and the storage electrode 131 may be electricallyconnected to each other through a shorting defect portion 322. However,the voltage of the signal input to the pixel electrode 191 and thevoltage applied to the storage electrode 131 may not be the same.

To electrically separate the second portion 131 b connected to the firstportion 131 a of the storage electrode 131 including the shorting defectportion 322, the second portion 131 b of the storage electrode 131 thatis close to the shorting defect portion 322 and does not overlap thedata line 171 and the pixel electrode 191 may be irradiated by the laser330 to be disconnected.

Hereinafter, a method of repairing a short of a pixel electrode 191 anda storage electrode 131 of the liquid crystal display described withreference to FIG. 5, FIG. 6, FIG. 7, and FIG. 8 will be described withreference to FIG. 14.

Referring to FIG. 14, the repair may be processed using the same methodas described above with regard to FIG. 13; however, in the liquidcrystal display described with reference to FIG. 5, FIG. 6, FIG. 7, andFIG. 8, the first portion 131 a of the storage electrode 131 that ispositioned at the upper side relative to the disconnection portion 134and the pixel electrode 191 that is positioned at the left side of thedisconnection portion 134 may be shorted.

To electrically separate the second portion 131 b connected to the firstportion 131 a of the storage electrode 131 including the shorting defectportion 322, the second portion 131 b of the storage electrode 131 thatis close to the shorting defect portion 322 and does not overlap thedata line 171 and the pixel electrode 191 may be irradiated by the laser330 to be disconnected.

Like the above-described case of repairing the disconnection of the dataline, when repairing the short of the pixel electrode and the storageelectrode in the liquid crystal display described with reference to FIG.13 and FIG. 14, the effect on the adjacent pixel may be reduced to about⅓ compared with the liquid crystal display without the disconnectionportion.

Hereinafter, a method of repairing a short of a pixel electrode 191 anda storage electrode 131 of the liquid crystal display described withreference to FIG. 9 and FIG. 12 will be described with reference to FIG.15 and FIG. 16.

Referring to FIG. 15, when the shorting defect is generated between thefirst portion 131 a of the storage electrode 131 and the pixel electrode191, the second portion 131 b connected to the first portion 131 a ofthe storage electrode 131 including the shorting defect portion 322 maybe disconnected through the irradiation of a laser 330. The portion ofthe storage electrode 131 that is close to the shorting defect portion322 and not overlap the data line 171, and the pixel electrode 191 maybe irradiated by the laser 330. The lower end of the first portion 131 aof the storage electrode 131 may be separated from the second portion131 b such that the laser 330 may be irradiated to only the secondportion 131 b that is positioned at both sides of the upper end of thefirst portion 131 a.

Referring to FIG. 16, when the shorting defect is generated between thesecond portion 131 b of the storage electrode 131 and the pixelelectrode 191, the laser 330 may be irradiated to separate the portionwhere the shorting defect portion 322 is positioned from the storageelectrode 131 to be disconnected. The laser 330 may be irradiated on theportion where the storage electrode 131 does not overlap the data line171 and the pixel electrode 191 while being close to the shorting defectportion 322. The second portion 131 b of the storage electrode 131 maybe connected to the portion parallel to the gate line 121 and theportion parallel to the data line 171 such that the laser 330 may beirradiated on the upper and lower sides of the second portion 131 b ofthe storage electrode 131 with reference to the shorting defect portion322.

It will be apparent to those skilled in the art that variousmodifications and variations can be made in the present inventionwithout departing from the spirit or scope of the invention. Thus, it isintended that the present invention cover the modifications andvariations of this invention provided they come within the scope of theappended claims and their equivalents.

What is claimed is:
 1. A method of repairing a short of a pixelelectrode and a storage electrode, the method comprising: irradiating alaser to separate a portion shorted to the pixel electrode among thestorage electrode to be disconnected, wherein the storage electrodecomprises a first portion overlapping a data line between two adjacentgate lines and a second portion connected to the first portion andenclosing an edge of a pixel area except for a region where the firstportion is formed, wherein the pixel area is defined by the data lineand a gate line, wherein a thin film transistor is coupled to the dataline, the gate line, and the pixel electrode, and wherein two adjacentpixel areas are defined by the two adjacent gate lines and two adjacentdata lines, and the storage electrode is branched between pixelelectrodes respectively formed in the two adjacent pixel areas.
 2. Themethod of claim 1, wherein the laser is irradiated at a portion wherethe storage electrode does not overlap the data line and the pixelelectrode.
 3. The method of claim 1, wherein the laser is irradiated ata portion where the storage electrode does not overlap the data line andthe pixel electrode while being irradiated adjacent to a portion wherethe pixel electrode and the storage electrode are shorted.